Science
Mechanism of Action
It forms a thin, flexible, and continuous water-resistant coating on the skin as it dries. This film improves pigment and UV filter adhesion, prevents wash-off, and contributes to a smoother skin texture.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Dermal irritation studies in rabbits found mixtures with 30% solids to be practically non-irritating (CIR Amended Safety Assessment of Acrylates Copolymers, 2018).
- 02 Human patch tests on similar acrylates copolymers showed no irritation or sensitization at up to 25% aqueous dilution (FDA/CIR Safety Review Data).
Transparency
Dusting Analysis
There is no information in the provided research data to suggest this ingredient is commonly dusted.
The Formula
Formulation
Stability
This anionic ingredient is typically supplied as an aqueous emulsion with a pH around 8.0. Stability is best in alkaline to neutral environments; low pH may cause precipitation.
Conflicts
- Cationic surfactants
- Strongly acidic environments (pH < 6.0)
- Multivalent metal ions
Safety
Safety Profile
The CIR Expert Panel found it safe when formulated to be non-irritating, with trace levels of residual monomers (<20 ppm) being the primary safety consideration.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This film-forming copolymer is a valuable ingredient for enhancing product longevity and water resistance across all skin types, with a strong safety profile at typical concentrations.
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References
Sources